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公开(公告)号：US11148227B2
公开(公告)日：2021-10-19
申请号：US16098104
申请日：2016-07-29
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Krzysztof Nauka , Tom Anthony
IPC: B23K26/34 , B33Y10/00 , B33Y30/00 , B23K26/342 , B33Y50/02 , B29C64/153 , B29C64/393 , B29C64/295 , B23K26/062 , B23K26/70 , B29C64/268 , B23K26/00 , B23K26/03 , B23K26/14 , B33Y40/00 , B23K103/16
Abstract: According to an example, an apparatus may include a heating lamp to illuminate and heat an area of a layer of build materials, in which the build materials may be one of a metallic and a plastic powder. The apparatus may also include a laser source to generate a laser beam and a controller to control the heating lamp to heat the build materials in the area of the layer of build materials to a temperature that is between about 100° C. to about 400° C. below a temperature at which the build materials begin to melt and to control the laser source to output a laser beam to melt the build materials in a portion of the heated area of the layer of build materials.
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公开(公告)号：US10968356B2
公开(公告)日：2021-04-06
申请号：US15764863
申请日：2016-01-27
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Sivapackia Ganapathiappan , Howard S Tom , Yan Zhao , Kristopher J Erickson , Krzysztof Nauka , Lihua Zhao
IPC: C09D11/322 , C09D11/32 , C09D11/36 , C09D11/106 , C09D11/30 , C09D11/033 , B33Y10/00 , B33Y70/00 , B29C64/165 , C09D11/023 , C09D11/037 , C09D11/101 , C09D11/102 , B29K105/00
Abstract: The present disclosure is drawn to coalescent inks and material sets, such as for 3D printing. In one example, the coalescent ink can include a conjugated polymer, a colorant imparting a visible color to the coalescent ink, and an ink vehicle comprising a high boiling point co-solvent having a boiling point of 250° C. or greater. The high boiling point co-solvent can be present in an amount from about 1 wt % to about 4 wt % with respect to the coalescent ink.
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公开(公告)号：US10919217B2
公开(公告)日：2021-02-16
申请号：US15568979
申请日：2015-07-23
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Krzysztof Nauka , Howard S. Tom , Kristopher J. Erickson , Lihua Zhao , Sivapackia Ganapathiappan
IPC: B29C64/153 , C08K5/00 , C08L77/02 , B33Y70/00 , C08K3/20 , C08K3/22 , C08K3/32 , C08L101/00 , C08K3/30 , C08L71/12 , C08L101/12
Abstract: A three-dimensional printing build material composition includes a polymer particle, and a radiation absorbing additive mixed with the polymer particle. The radiation absorbing additive has a particle size ranging from about 1 μm to about 100 μm, and the radiation absorbing additive is to absorb incident radiation having wavelengths ranging from 700 nm to 10 μm.
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公开(公告)号：US10766246B2
公开(公告)日：2020-09-08
申请号：US15518477
申请日：2014-12-15
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Krzysztof Nauka , Sivapackia Ganapathiappan , Lihua Zhao , Howard S. Tom , Yan Zhao , Hou T. Ng
IPC: B29C64/10 , B33Y50/02 , B33Y10/00 , B29C70/68 , B29C64/165 , B29C64/153 , B29C64/386 , B33Y30/00 , B29K77/00
Abstract: In one example, a non-transitory processor readable medium with instructions thereon that when executed cause an additive manufacturing machine to partially or completely bury a part in layers of molten build material.
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公开(公告)号：US10731044B2
公开(公告)日：2020-08-04
申请号：US15507584
申请日：2014-09-26
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Sivapackia Ganapathiappan , Howard S. Tom , Lihua Zhao , Krzysztof Nauka , Yan Zhao , Hou T. Ng , Keshava A. Prasad
IPC: C09D11/037 , C09D11/50 , B33Y70/00 , C09D11/033 , B29C67/00 , B33Y10/00 , C09D11/328 , C09D11/322 , B29C64/165
Abstract: The present disclosure is drawn to coalescent inks and material sets for 3D printing. The coalescent ink can include a water-soluble near-infrared dye having a peak absorption wavelength from 800 nm to 1400 nm. The coalescent ink can also contain water.
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公开(公告)号：US10538032B2
公开(公告)日：2020-01-21
申请号：US15523522
申请日：2014-11-03
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Henryk Birecki , Krzysztof Nauka , Sivapackia Ganapathiappan
IPC: B29C64/165 , B33Y10/00 , B33Y30/00 , B29K77/00 , B29K105/00 , B29C64/112 , B29C64/393 , B29C64/291 , B33Y50/02
Abstract: Provided in one example herein is a three-dimensional (“3D”) printing method, comprising: (A) forming a layer comprising particles comprising a thermoplastic; (B) disposing over at least a portion of the layer a coalescent agent, which is radiation-absorbing and has a thermal decomposition temperature lower than or equal a melting temperature of the thermoplastic; (C) forming an object slice of a 3D object by exposing the coalescent agent to a radiant energy such that at least some of the coalescent agent thermally decomposes while causing at least some of the particles to fuse, wherein the object slice comprises the fused particles, and wherein the thermally decomposed coalescent agent is not radiation-absorbing; and (D) repeating (A) to (C) to form the 3D object comprising multiple object slices bound depth-wise to one another.
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公开(公告)号：US20180147629A1
公开(公告)日：2018-05-31
申请号：US15570367
申请日：2015-07-31
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Krzysztof Nauka , Sivapackia Ganapathiappan , Howard S Tom , Kris J Erickson
CPC classification number: B22F3/1055 , B22F2003/1056 , B22F2003/1057 , B33Y10/00 , B33Y30/00 , B33Y50/02 , Y02P10/295
Abstract: Example described herein include a three-dimensional printer a threedimensional printing device that includes a fusible material applicator to apply a layer of fusible material, a inhibiting material applicator to apply a patterned layer of inhibiting material to establish exposed regions of the layer of fusible material and blocked regions of the layer of fusible material based on information corresponding to a three-dimensional model, and a photonic energy emitter to apply photonic energy to fuse the exposed regions of the layer of fusible material.
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公开(公告)号：US20170305066A1
公开(公告)日：2017-10-26
申请号：US15513483
申请日：2014-09-26
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Krzysztof Nauka , Sivapackia Ganapathiappan , Lihua Zhao , Howard S. Tom , Yan Zhao , Hou T. Ng , James Elmer Abbott, Jr. , Alexander Govyadinov , Vladek Kasperchik
IPC: B29C64/264 , B33Y10/00 , B33Y50/02 , B29C64/393
CPC classification number: B29C64/264 , B29C64/165 , B29C64/393 , B33Y10/00 , B33Y50/02
Abstract: In one example, a non-transitory processor readable medium having instructions thereon that when executed cause an additive manufacturing machine to expose build material to a light source emitting monochromatic light within a band of wavelengths that includes a peak light absorption of a liquid coalescing agent to be dispensed on to the build material.
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公开(公告)号：US20170239889A1
公开(公告)日：2017-08-24
申请号：US15506572
申请日：2014-09-26
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Sivapackia Ganapathiappan , Howard S. Tom , Lihua Zhao , Krzysztof Nauka , Yan Zhao , Hou T. Ng
IPC: B29C67/00 , C09D11/102 , C09D11/037 , C09D11/033 , B33Y10/00 , B33Y70/00
Abstract: The present disclosure is drawn to coalescent inks and material sets for 3D printing. The coalescent ink can include an organic-soluble near-infrared dye having a peak absorption wavelength from 800 nm to 1400 nm. The coalescent ink can also in water and an organic co-solvent.
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公开(公告)号：US20170151722A1
公开(公告)日：2017-06-01
申请号：US15127739
申请日：2014-04-30
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Keshava A. Prasad , David H. Donovan , Krzysztof Nauka , Ali Emamjomeh , Hua Tan
CPC classification number: B33Y50/02 , B29C64/165 , B29C64/386 , B29C64/40 , B29C67/00 , B33Y10/00 , G06F17/5009
Abstract: In a computational modeling method for identifying how to apply a modifying agent during a three-dimensional (3D) printing method, a thermal diffusion model of a layer of a 3D object to be formed from a portion of a sinterable material using the 3D printing method is created. The thermal diffusion model is created by a computer running computer readable instructions stored on a non-transitory, tangible computer readable storage medium. A quantity of the modifying agent to be selectively applied is calculated, by the computer, based upon the thermal diffusion model.
